Publication list 

2016 
2015 
2014 
2013 
2012 
2011 
2010 
2009 
2008 
2007 
2006 
2005 
2004 
2003 
2002 
2001 

Publications in 2016 

 N. Matsuda, and H. Takesue, "Generation and manipulation of entangled photons on silicon chips," Nanophotonics 5 (3) 440455 (2016).
 R. J. Collins, R. Amiri, M. Fujiwara, T. Honjo, K. Shimizu, K. Tamaki, M. Takeoka, E. Andersson, G. S. Buller, and M. Sasaki, "Experimental transmission of quantum digital signatures over 90 km of installed optical fiber using a differential phase shift quantum key distribution system," Opt. Lett. 41 (21) 48834886 (2016).
 R.Ikuta, T.Kobayashi, K. Matsuki, S.Miki, T.Yamashita, H. Terai, T. Yamamoto,
M. Koashi, T. Mukai, and N. Imoto, "Heralded single excitation of atomic ensemble via solidstatebased telecom photon detection,", Optica 3 (11) 12791284 (2016).
 T. Inagaki, Y. Haribara, K. Igarashi, T. Sonobe, S. Tamate, T. Honjo, A. Marandi, P. L. McMahon, T. Umeki, K. Enbutsu, O. Tadanaga, H. Takenouchi, K. Aihara, K. Kawarabayashi, K. Inoue, S. Utsunomiya, and H. Takesue, "A coherent Ising machine for 2000node optimization problems," Science (2016) DOI: 10.1126/science.aah4243
 P. L. McMahon, A. Marandi, Y. Haribara, R. Hamerly, C. Langrock, S. Tamate, T. Inagaki, H. Takesue, S. Utsunomiya, K. Aihara, R. L. Byer, M. M. Fejer, H. Mabuchi, and Y. Yamamoto, "A fullyprogrammable 100spin coherent Ising machine with alltoall connections," Science (2016) DOI: 10.1126/science.aah5178
 H. Takesue and T. Inagaki, "10 GHz clock timemultiplexed degenerate optical parametric oscillators for a photonic Ising spin network," Opt. Lett. 41, 42734276 (2016)
 R. Hamerly, K. Inaba, T. Inagaki, H. Takesue, Y. Yamamoto, and H. Mabuchi, "Topological defect formation in 1D and 2D spin chains realized by network of optical parametric oscillators," Int. J. Mod. Phys. B 30, 1630014 (2016)
 H. Takesue, and T. Inagaki, "10 GHz clock timemultiplexed degenerate optical parametric oscillators for a photonic Ising spin network," Opt. Lett. 41 (18) 42734276 (2016)
 T. Inagaki, K. Inaba, R. Hamerly, K. Inoue, Y. Yamamoto, and H. Takesue, "Largescale Ising spin network based on degenerate optical parametric oscillators, " Nat. Photonics 10 (6) 415+ (2016)
 D. Morita, T. Kubo, Y. Tokura, and M. Yamashita, "Spin1 quantum walks, " Phys. Rev. A 93 (6), 063625 (2016)
 K. Inaba, and M. Yamashita, "Theoretical analysis of the spectroscopy of atomic BoseHubbard systems," Phys. Rev. A 93 (4), 043608 (2016).
 S. Kato, K. Inaba, S. Sugawa, K. Shibata, R. Yamamoto, M. Yamashita, and Y. Takahashi, "Laser spectroscopic probing of coexisting superfluid and insulating states of an atomic BoseHubbard system, " Nat. Commun. 7, 11341 (2016).
 R. Asaoka, H. Tsuchiura, M. Yamashita and Y. Toga, "Dynamical instability in the S=1 BoseHubbard model," Phys. Rev. A 93 (1), 013628 (2016)
 T. Ikuta and H. Takesue, "Enhanced violation of the CollinsGisinLindenMassarPopescu inequality with optimized timebinentangled ququarts," Phys. Rev. A 93 (2), 022307 (2016)
 D. Hashimoto and K. Shimizu, "Coherent Raman beat analysis of the hyperfine sublevel coherence properties of Er167(3+) ions doped in an Y2SiO5 crystal," J. Lumines. 171 183190 (2016)
 N. Matsuda, "Deterministic reshapin of single photon spectra using crossphase modulation," Science Advance 2, el501223 (2016)

Publications in 2015 

 H. Takesue, E. Diamanti, R. Thew and Z. L. Yuan, "Introduction to the Issue on Quantum Communication and Cryptography," IEEE J. Sel. Top. Quantum Electron. 21 (3), 0200402 (2015)
 N. Zen, H. Shibata, Y. Mawatari, M. Koike and M. Ohkubo, "Biomolecular ion detection using hightemperature superconducting MgB2 strips," Appl. Phys. Lett. 106 (22), 222601 (2015)
 K. Noda, K. Inaba and M. Yamashita, "Magnetism in the threedimensional layered Lieb lattice: Enhanced transition temperature via flatband and Van Hove singularities," Phys. Rev. A 91 (6), 063610 (2015)
 H. Shibata, K. Shimizu, H. Takesue and Y. Tokura, "Ultimate low system darkcount rate for superconducting nanowire singlephoton detector," Opt. Lett. 40 (14), 34283431 (2015)
 J. Carolan, C. Harrold, C. Sparrow, E. MartinLopez, N. J. Russell, J. W. Silverstone, P. J. Shadbolt, N. Matsuda, M. Oguma, M. Itoh, G. D. Marshall, M. G. Thompson, J. C. F. Matthews, T. Hashimoto, J. L. O'Brien and A. Laing, "Universal linear optics," Science 349 (6249), 711716 (2015)
 H. Takesue, S. D. Dyer, M. J. Stevens, V. Verma, R. P. Mirin and S. W. Nam, "Quantum teleportation over 100 km of fiber using highly efficient superconducting nanowire singlephoton detectors," Optica 2 (10), 832835 (2015)
 H. Takesue, T. Sasaki, K. Tamaki and M. Koashi, "Experimental quantum key distribution without monitoring signal disturbance," Nat. Photonics 9 (12), 827831 (2015)
 F. Morikoshi, "An entanglement analogue in light cones," Prog. Theor. Exp. Phys. (12), 123A04 (2015)
 K. Shimizu and Y. Tokura, "Identifying a correlated spin fluctuation in an entangled spin chain subject to a quantum phase transition," Phys. Rev. E 92 (6), 062143 (2015)

Publications in 2014 

 H. Imai, K. Inaba, TanjiH. Suzuki, M. Yamashita, T. Mukai, "BoseEinstein condensate on a persistentsupercurrent atom chip", Appl. Phys. BLasers Opt. 116 (4), 821829 (2014)
 K. Inaba, Y. Tokunaga, K. Tamaki, K. Igeta, M. Yamashita, "HighFidelity Cluster State Generation for Ultracold Atoms in an Optical Lattice", Phys. Rev. Lett. 112 (11), 110501 (2014)
 N. Matsuda, P. Karkus, H. Nishi, T. Tsuchizawa, Munro, WJ; H. Takesue, K. Yamada, "Onchip generation and demultiplexing of quantum correlated photons using a siliconsilica monolithic photonic integration platform", Opt. Express 22 (19), 2283122840 (2014)
 N. Matsuda, E. Kuramochi, H. Takesue, M. Notomi, "Dispersion and light transport characteristics of largescale photoniccrystal coupled nanocavity arrays", Opt. Lett. 39 (8), 22902293 (2014)
 K. Noda, K. Inaba, M. Yamashita, "Flatband ferromagnetism in the multilayer Lieb optical lattice", Phys. Rev. A 90 (4), 043624 (2014)
 H. Shibata, "Fabrication of a MgB2 nanowire singlephoton detector using Br2N2 dry etching", Appl. Phys. Express 7 (10), 103101 (2014)
 H. Shibata, T. Honjo, K. Shimizu, "Quantum key distribution over a 72 dB channel loss using ultralow dark count superconducting singlephoton detectors", Opt. Lett. 39 (17), 50785081 (2014)
 K. Shimizu, T. Honjo, M. Fujiwara, T. Ito, K. Tamaki, S. Miki, T. Yamashita, H. Terai, Z. Wang, M. Sasaki, "Performance of LongDistance Quantum Key Distribution Over 90km Optical Links Installed in a Field Environment of Tokyo Metropolitan Area", J. Lightwave Technol. 32 (1), 141151 (2014)
 H. Takesue, "Entangling timebin qubits with a switch", Phys. Rev. A 89 (6), 062328 (2014)
 H. Takesue, N. Matsuda, E. Kuramochi, M. Notomi, "Entangled photons from onchip slow light", Sci Rep 4, 3913 (2014)

(Collaborated Research) 

 Akihiro Mizutani, Kiyoshi Tamaki, Rikizo Ikuta, Takashi Yamamoto, and Nobuyuki Imoto
"Measurementdeviceindependent quantum key distribution for ScaraniAcinRibordyGisin 04 protocol"
Sci. Rep. 4, 5236 (2014).
 A. Abdelrahman, T. Mukai, H. Haffner, T. Byrnes, "Coherent alloptical control of ultracold atoms arrays in permanent magnetic traps", Opt. Express 22 (3), 35013513 (2014)
 R. Asaoka, H. Tsuchiura, M. Yamashita, Y. Toga, "Density Modulations Associated with the Dynamical Instability in the BoseHubbard Model", J. Phys. Soc. Jpn. 83 (12), 124001 (2014)
 T. Byrnes, D. Rosseau, M. Khosla, A. Pyrkov, A. Thomasen, T. Mukai, S. Koyama, A. Abdelrahman, IloE. Okeke, "Macroscopic quantum information processing using spin coherent states", Optics Communicatins, 337, 102109 (2014)

Publications in 2013 

 K. Igeta, N. Imoto, M. Koashi, "Fundamental limit to qubit control with coherent field", Phys. Rev. A 87 (2), 022321 (2013)
 K. Inaba, SI. Suga, "SUPERFLUID, STAGGERED STATE, AND MOTT INSULATOR OF REPULSIVELY INTERACTING THREECOMPONENT FERMIONIC ATOMS IN OPTICAL LATTICES", Mod. Phys. Lett. B 27 (12), 1330008 (2013)
 T. Inagaki, T. Imai, J. Miyazu, J. Kobayashi, "Polarization independent varifocal lens using KTN crystals", Opt. Lett. 38 (15), 26732675 (2013)
 T. Inagaki, N. Matsuda, O. Tadanaga, M. Asobe, H. Takesue, "Entanglement distribution over 300 km of fiber", Opt. Express 21 (20), 2324123249 (2013)
 T. Kubo, Y. Tokura, "Backaction dephasing by a quantum dot detector", Phys. Rev. B 88 (15), 155402 (2013)
 N. Matsuda, H. Takesue, K. Shimizu, Y. Tokura, E. Kuramochi, M. Notomi, "Slow light enhanced correlated photon pair generation in photoniccrystal coupledresonator optical waveguides", Opt. Express 21 (7), 85968604 (2013)
 F. Morikoshi, "Multipartite Nonlocality in Ontological Models of Quantum Theory", J. Phys. Soc. Jpn. 82 (5), 055003 (2013)
 H. Shibata, T. Akazaki, Y. Tokura, "Ultrathin MgB2 films fabricated by molecular beam epitaxy and rapid annealing", Supercond. Sci. Technol. 26 (3), 035005 (2013)
 H. Shibata, T. Akazaki, Y. Tokura, "Fabrication of MgB2 Nanowire SinglePhoton Detector with Meander Structure", Appl. Phys. Express 6 (2), 023101 (2013)
 H. Shibata, K. Shimizu, H. Takesue, Y. Tokura, "Superconducting Nanowire SinglePhoton Detector with Ultralow Dark Count Rate Using Cold Optical Filters", Appl. Phys. Express 6 (7), 072801 (2013)
 AM. Stephens, JJ. Huang, K. Nemoto, WJ. Munro, "Hybridsystem approach to faulttolerant quantum communication", Phys. Rev. A 87 (5), 052333 (2013)
 AM. Stephens, WJ. Munro, K. Nemoto, "Highthreshold topological quantum error correction against biased noise", Phys. Rev. A 88 (6), 060301 (2013)
 H. Takesue, N. Matsuda, E. Kuramochi, WJ. Munro, M. Notomi, "An onchip coupled resonator optical waveguide singlephoton buffer", Nat. Commun. 4, 2725 (2013)
 M. Yamashita, S. Kato, A. Yamaguchi, S. Sugawa, T. Fukuhara, S. Uetake, Y. Takahashi, "Strongly interacting array of BoseEinstein condensates trapped in a onedimensional optical lattice", Phys. Rev. A 87 (4), 041604 (2013)

(Collaborated Research) 

 S. Bevilacqua, S. Cherednichenko, V. Drakinskiy, H. Shibata, Y. Tokura, J. Stake, "Study of IF Bandwidth of MgB PhononCooled HotElectron Bolometer Mixers", IEEE Trans. Terahertz Sci. Technol. 3 (4), 409415 (2013)
 SJ. Devitt, WJ. Munro, K. Nemoto, "Quantum error correction for beginners", Rep. Prog. Phys. 76 (7), 076001 (2013)
 SJ. Devitt, AM. Stephens, WJ. Munro, K. Nemoto, "Requirements for faulttolerant factoring on an atomoptics quantum computer", Nat. Commun. 4, 2524 (2013)
 M. Fujiwara, T. Honjo, K. Shimizu, K. Tamaki, M. Sasaki, "Characteristics of superconducting single photon detector in DPSQKD system under bright illumination blinding attack", Opt. Express 21 (5), 63046312 (2013)
 T. Hatano, Y. Tokura, S. Amaha, T. Kubo, S. Teraoka, S. Tarucha, "Excitation spectroscopy of fewelectron states in artificial diatomic molecules", Phys. Rev. B 87 (24), 241414 (2013)
 T. Honjo, M. Fujiwara, K. Shimizu, K. Tamaki, S. Miki, T. Yamashita, H. Terai, Z. Wang, M. Sasaki, "Countermeasure against tailored bright illumination attack for DPSQKD", Opt. Express 21 (3), 26672673 (2013)

Publications in 2012 

 M. Yamashita and K. Inaba, "Diverse Quantum Phases of BoseFermi Mixtures in an Optical Lattice", BUTURI 67, 690 (2012)
 H. Shibata, "Optical Characterization of Superconducting Strip Photon Detector Using MgB2", Physics Procedia 36, 324 (2012)
 H. Shibata, N. Kaina, T. Seki, Y. Tokura and N. Imoto, "NbN superconducting singlephoton with bilayer structure", Physics Procedia 36, 324 (2012).
 N. Matsuda, H. Le. Jeannic, H. Fukuda, T. Tsuchizawa, W. J. Munro, K. Shimizu, K. Yamada, Y. Tokura and H. Takesue, "A monolithically integrated polarization entangled photon pair source on a silicon chip", Scientific Report 2, 817 (2012).
 K. Tamaki, H. K. Lo, C. H. F. Fung and B. Qi, "Phase encoding schemes for measurementdeviceindependent quantum key distribution with basisdependent flaw", Physical Review A 85, 042307 (2012).
 H. Takesue, "Entangled Photon Pair Generation Using Silicon Wire Waveguides", IEEE Journal of Selected Topics in Quantum Electronics 18, 17221732 (2012).
 W. J. Munro, A. M. Stephens, S. J. Devitt, K. A. Harrison and K. Nemoto, "Quantum communication without the necessity of quantum memories", Nature Photonics 6, 777781 (2012).
 K. Inaba and S. Suga, "Superfluid State of Repulsively Interacting ThreeComponent Fermionic Atoms in Optical Lattices", Physical Review Letters 108, 255301 (2012).
 K. Azuma, H. Takeda, M. Koashi and N. Imoto, "Quantum repeaters and computation by a single module: Remote nondestructive parity measurement", Physical Review A 85, 062309 (2012).
 G. Kato and K. Azuma, "Optimal entanglement manipulation via coherentstate transmission", Physical Review A 85, 060303 (2012).

(Collaborated Research) 

 K. Sasaki, K. Kato, Y. Tokura, S. Suzuki, and T. Sogawa, "Pseudospin for Raman D Band in Armchair Graphene Nanoribbons", Phys. Rev. B 85, 075437 (2012).
 S. Amaha, T. Hatano, H. Tamura, S. Teraoka, T. Kubo, Y. Tokura, D. G. Austing, and S. Tarucha, "ResonanceHybrid States in Triple Quantum Dot", Phys. Rev. B 85, 081301(R) (2012).
 Y. Toga, H. Tsuchiura, M. Yamashita, K. Inaba and H. Yokoyama, "Mott Transition and Spin Structures of Spin1 Bosons in TwoDimensional Optical Lattice at Unit Filling", Journal of The Physical Society of Japan 81, 063001 (2012).
 N. Masumoto, N. Y. Kim, T. Byrnes, K. Kusudo, A. Loffler, S. Hofling, A. Forchel and Y. Yamamoto, "Excitonpolariton condensates with flat bands in a twodimensional kagome lattice", New Journal of Physics 14, 065002 (2012).
 M. Kohda, S. Nakamura, Y. Nishihara, K. Kobayashi, T. Ono, J. Ohe, Y. Tokura, T. Mineno and J. Nitta, "Spinorbit induced electronic spin separation in semiconductor nanostructures", Nature Communications 3, 1082 (2012).
 J. Joo, K. Park, H. Jeong, W. J. Munro, K. Nemoto and T. P. Spiller, "Quantum metrology for nonlinear phase shifts with entangled coherent states", Physical Review A 86, 043828 (2012).
 M. J. Everitt, W. J. Munro and T. P. Spiller, "Overcoming decoherence in the collapse and revival of spin Schrodingercat states", Physical Review A 85, 022113 (2012).
 K. L. Brown, C. Horsman, V. Kendon and W. J. Munro, "Layerbylayer generation of cluster states", Physical Review A 85, 052305 (2012).
 S. Bevilacqua, S. Cherednichenko, V. Drakinskiy, J. Stake, H. Shibata and Y. Tokura, "Low noise MgB2 terahertz hotelectron bolometer mixers", Applied Physics Letters 100, 033504 (2012).
 U. Akram, W. J. Munro, K. Nemoto and G. J. Milburn, "Photonphonon entanglement in coupled optomechanical arrays", Physical Review A 86, 042306 (2012).

Publications in 2011 
International 
 T. Shobu, H. Yamaoka, H. Imai, A. Morinaga, and M. Yamashita, "Optimized evaporative cooling for sodium BoseEinstein condensation against threebody loss", Phys. Rev. A 84, 033626 (2011).
 S. Tarucha, T. Obata, M. PioroLadriere, R. Brunner, Y. S. Shin, T.Kubo and Y. Tokura, "Coherent control of two individual electron spins and influence of hyperfine coupling in a double quantum dot", J. Phys: Conf. Ser. 334, 012009 (2011).
 N. K. Langford, S. Ramelow, R. Prevedel, W. J. Munro, G. J. Milburn & A. Zeilinger, "Efficient quantum computing using coherent photon conversion", Nature vol. 478 pp. 360363 (2011).
 Nobuyuki Matsuda, Takumi Kato, Kenichi Harada, Hiroki Takesue, Eiichi Kuramochi, Hideaki Taniyama, Masaya Notomi, "Slow light enhanced optical nonlinearity in a silicon photonic crystal coupledresonator optical waveguide," Opt. Express 19, 19861 (2011).
 Daisuke Hashimoto and Kaoru Shimizu, "Population relaxation induced by the Boson peak mode observed in optical hyperfine spectroscopy of 167Er3+ ions doped in a silicate glass fiber," J. Opt. Soc. Am. B 28, 2227 (2011).
 Hiroki Takesue, "Quantum Communication Using Entangled Photon PairsToward Quantum Repeaters", NTT Technical Review September 2011 Volume 9 No. 9.
 Hiroyuki Shibata, "Superconducting Singlephoton Detectors", NTT Technical Review September 2011 Volume 9 No. 9.
 Yasuhiro Tokura and Toshimori Honjo, "Differential Phase Shift Quantum Key Distribution (DPSQKD) Experiments", NTT Technical Review September 2011 Volume 9 No. 9.
 Kiyoshi Tamaki and Go Kato, "Theory of the Security of Quantum Key Distribution", NTT Technical Review September 2011 Volume 9 No. 9.
 Yasuhiro Tokura, "Quantum Key Distribution Technology", NTT Technical Review September 2011 Volume 9 No. 9.
 Hitoshi Yoshizumi, Kensuke Inaba, Tomoko Kita and Seiichiro Suga, "Twoorbital Kondo effect in a quantum dot coupled to ferromagnetic leads", Phys. Rev. B 83, 155310 (2011)
 Shinya Miyatake, Kensuke Inaba and Seiichiro Suga, "Color superuidity and trionic state of threecomponent lattice fermionic atoms", Journal of Physics: Conference Series 273, 012008 (2011)
 Seiichiro Suga and Kensuke Inaba, "Threecomponent Repulsive Fermionic Atoms in Optical Lattices at nite temperatures", Journal of Physics: Conference Series 273, 012016 (2011)
 Kensuke Inaba and Seiichiro Suga, "Color Superfluid and Trionic State of Attractive ThreeComponent Lattice Fermionic Atoms at Finite Temperatures", Modern Physics Letters B 25, 987 (2011)
 K. Sasaki, K. Kato, Y. Tokura, K. Oguri and T. Sogawa, "Theory of optical transitions in graphene nanoribbons", Phys. Rev. B. 84, 085458 (2011).
 Xiaobo Zhu, Shiro Saito, Alexander Kemp, Kosuke Kakuyanagi, Shinichi Karimoto, Hayato Nakano, William J. Munro, Yasuhiro Tokura, Mark Everitt, Kae Nemoto, Makoto Kasu, Norikazu Mizuochi, Kouichi Semba, "Coherent coupling of a superconducting fluxqubit to an electron spin ensemble in diamond", Nature 478, 221 (2011).
 R. Brunner, Y. S. Shin, T. Obata, M. PioroLaderiere, Y. Tokura, T. Kubo, K. Yoshida, T. Taniyama, and S. Tarucha, "Realization of a spin twoqubit gate with semiconductor quantum dots using an inhomogeneous Zeeman field", Phys. Rev. Lett. 107, 146801 (2011).
 S. Sugawa, K. Inaba, S. Taie, R. Yamazaki, M. Yamashita and Y. Takahashi, "Interaction and filling induced quantum phases of dual Mott insulators of bosons and fermions", Nature Physics 7, 642648 (2011)
 K. Yamada, M. Stopa, T. Hatano, T. Yamaguchi, T. Ota, Y. Tokura and S. Tarucha, "Geometric blockade in quantum dot coupled to twodimensional and threedimensional electron gases", Phys. Rev. B 84, 201303(R) (2011).
 Amnon Aharony, Yasuhiro Tokura, Guy Z. Cohen, Ora EntinWohlman, Shingo Katsumoto, "Filtering and analyzing mobile qubit information via RashbaDresselhausAharonovBohm interferometers", Phys. Rev. B 84, 035323 (2011) arXiv:1103.2232.
 R. S. Deacon, Y. Kanai, S. Takahashi, A. Oiwa, K. Yoshida, K. Shibata, K. Hirakawa, Y. Tokura and S. Tarucha, "Electrically tuned gtensor in an InAs selfassembled quantum dot", Phys. Rev. B 84, 041302(R) (2011).
 Y. Kanai, R. S. Deacon, S. Takahashi, A. Oiwa, K. Yoshida, K. Shibata, K. Hirakawa, Y. Tokura, and S. Tarucha, "Electrically tuned spinorbit interaction in an InAs selfassembled quantum dot", Nature Nanotechnology, 6, 511 (2011).
 ShiuMing Huang, Yasuhiro Tokura, Hikota Akimoto, Kimitoshi Kono, JuhnJong Lin, Seigo Tarucha, and Keiji Ono, "Level broadening effect in electron tunneling through double quantum dots with different g factors", Jpn J. Appl. Phys. 50 (2011) 04DJ02.
 Toshihiro Kubo, Yuki Ichigo, and Yasuhiro Tokura, "Phase and amplitude of AharonovBohm oscillations in nonlinear threeterminal transport through a double quantum dot", Phys. Rev. B 83, 235310 (2011).
 N. Namekata, H. Takesue, T. Honjo, Y. Tokura, and S. Inoue, "Sinusoidally Gated InGaAs/InP Avalanche Photodiode Breaks New Ground in a LongDistance and HighRate Quantum Key Distribution", Opt. Exp. 19, 10632 (2011).
 K. Harada, H. Takesue, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, Y. Tokura and S. Itabashi, "Indistinguishable photon pair generation using two independent silicon wire waveguide", New J. Phys. 13, 065005 (2011).
 M. Sasaki, M. Fujiwara, H. Ishizuka, W. Klaus, K. Wakui, M. Takeoka, A. Tanaka, K. Yoshino, Y. Nambu, S. Takahashi, A. Tajima, A. Tomita, T. Domeki, T. Hasegawa,
Y. Sakai, H. Kobayashi, T. Asai, K. Shimizu, T. Tokura, T. Tsurumaru, M. Matsui, T. Honjo, K. Tamaki, H. Takesue, Y. Tokura, J. F. Dynes, A. R. Dixon, A. W. Sharpe,
Z. L. Yuan, A. J. Shields, S. Uchikoga, M. Legre, S. Robyr, P. Trinkler, L. Monat, J.B. Page, G. Ribordy, A. Poppe, A. Allacher, O. Maurhart, T. Langer, M. Peev,
and A. Zeilinger, "Field test of quantum key distribution in the Tokyo QKD Network", Opt. Exp. 19, 1038710409 (2011).
 M. Trupke, W. J. Munro, Kae Nemoto, and J. Schmiedmayer, "Enhancing photon collection from quantum emitters in diamond", Progress in Informatics 8, 3337 (2011).
 Simon J. Devitt, William J. Munro and Kae Nemoto, "High Performance Quantum Computing", Progress in Informatics 8, 4955 (2011).
 Masami Kumagai, Toshihide Takagahara and Kousuke Yakubo, "Topological transition by dielectric control of exciton wavefunction in thin nanotube structure", Solid State Commun. 151, 663(2011).
 Seigo Tarucha,Yasuhiro Tokura, `Control over single electron spins in qunatum dots' Comprehensive Semiconductor Science and Technology (SEST), ed. Pallab Bhattacharya, Roberto Fornari and Hiroshi Kamimura, Elsevior (2011 Feb.).
 YunSok Shin, Roland Brunner, Akihiro Shibatomi, Toshiaki Obata, Tomohiro Otsuka, Jun Yoneda, Yasuhiro Shiraki, Kentarou Sawano, Yasuhiro Tokura, Yuichi Harada, Koji Ishibashi, and Seigo Tarucha, `Aluminum oxide for an effective gate in Si/SiGe twodimensional electron gas system' Semicond. Sci. Technol. 26 (2011) 055004.
 T. Hatano, T. Kubo, Y. Tokura, S. Amaha, S. Teraoka, and S. Tarucha, "AharonovBohm oscillations changed by indirect interdot tunneling via electrons in parallelcoupled vertical double quantum dots", Phys. Rev. Lett. 106, 076801 (2011).
 Toshihiro Kubo, Yasuhiro Tokura, and Seigo Tarucha, "Kondo effects and shot noise enhancement in a laterally coupled double quantum dot", Phys. Rev. B. 83, 115310 (2011).
 Shinichi Amaha, Tetsuo Kodera, Tsuyoshi Hatano, Keiji Ono, Yasuhiro Tokura, Seigo Tarucha, James A. Gupta and David Guy Austing, `Pauli Spin Blockade and Influence of Hyperfine Interaction in Vertical Quantum Dot Molecule with Sixelectrons' J. Phys. Soc. Jpn. 80, (2011) 023701.
 F. Morikoshi, "Problemsolution symmetry in Grover's quantum search algorithm," Int. J. Theor. Phys. 50, 1858 (2011).

Publications in 2010 
International 
 Katherine L Brown, William J Munro and Vivien M Kendon, "Using Quantum Computers for Quantum Simulation", Entropy 2010, 12(11), 22682307.
 Vivien M. Kendon, Kae Nemoto and William J. Munro, "Quantum Analogue Computing", Phil. Trans. R. Soc. A August 13, 2010 368:36213632.
 K. Inaba, S. Miyatake, and S. Suga, "Mott transitions of threecomponent fermionic atoms with repulsive interaction in optical lattices", Phys. Rev. A 82, 051602 (2010).
 S. Miyatake, K. Inaba, and S. Suga "ColorSelective Mott Transition and Color Superfluid of ThreeComponent Fermionic Atoms with Repulsive Interaction in Optical Lattices" Physica C, 470, S916 (2010).
 S. Miyatake, K. Inaba, and S. Suga "Threecomponent fermionic atoms with repulsive interaction in optical lattices" Physical Review A 81 (2), 021603 (2010).
 K. Inaba, and M. Yamashita "Thermodynamic properties of twocomponent fermionic atoms trapped in a twodimensional optical lattice" Physical Review A 81 (6), 063615 (2010).
 M. J. Everitt, W. J. Munro, and T. P. Spiller "Quantum measurement with chaotic apparatus" Physics Letters A 374 (28)28092815 (2010).
 V. M. Kendon, K. Nemoto, and W. J. Munro "Quantum analogue computing" Philosophical Transactions Of The Royal Society Amathematical Physical 368 (1924)36093620 (2010).
 K. Tamaki, and T. Tsurumaru "Security Proof of Quantum Key Distribution" Ieice Transactions On Fundamentals Of Electronics Communications And E93A (5)880888 (2010).
 K. Inaba, and M. Yamashita "TimeofFlight Imaging Method to Observe Signatures of Antiferromagnetically Ordered States of Fermionic Atoms in an Optical Lattice" Physical Review Letters 105 (17), 173002 (2010).
 H. Shibata, T. Akazaki, and Y. Tokura, "Nanofabrication processes for magnesium diboride", Physica C 470, 5100551006 (2010).
 H. Shibata, H. Takesue, T. Honjo, T. Akazaki, and Y. Tokura, "Singlephoton detection using magnesium diboride superconducting nanowires", Appl. Phys. Lett. 97, 212504 (2010).
 T. Hatano, S. Amaha, T. Kubo, S. Teraoka, Y. Tokura, J. A. Gupta, D. G. Austing, S. Tarucha, "Transport properties of two laterally coupled vertical quantum dots in series with tunable interdot coupling", Appl. Phys. Lett. 97,062108 (2010).
 Toshihiro Kubo, Yasuhiro Tokura, and Seigo Tarucha, "Dephasing in an AharonovBohm interferometer containing a lateral double quantum dot induced by coupling with a quantum dot charge sensor", J. Phys. A:Math. Theor. 43, 354020 (2010).
 T. Seki, H. Shibata, H. Takesue, Y. Tokura and N. Imoto, "Comparison of timing jitter between NbN superconducting singlephoton detector and avalanche photodiode", Physica C 470 (2010) 15341537.
 H. Takesue, K. Harada, K. Tamaki, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, and S. Itabashi, "Longdistance entanglementbased quantum key distribution experiment using practical detectors," Opt. Express 18, 1677716787 (2010).
 H. Takesue, "Singlephoton frequency downconversion experiment," Phys. Rev. A 82, 013833 (2010).
 S. Takahashi, R. S. Deacon, K. Yoshida, A. Oiwa, K. Shibata, K. Hirakawa, Y. Tokura and S. Tarucha, "Large anisotropy of spinorbit interaction in a single InAs selfassembled quantum dot", Phys. Rev. Lett. 104, 246801 (2010).
 H. Takesue, T. Honjo, K. Harada, and B. Miquel, "Quantum communication experiments using telecomband entangled photons," IEICE Trans. Fundamentals E93A, 903909 (2010) (invited paper).
 Q. Zhang, H. Takesue, C. Langrock, Xiuping Xie, M. M. Fejer, and Y. Yamamoto, "HongOuMandel dip using degenerate photon pairs from a single periodically poled lithium niobate waveguide with integrated mode demultiplexer," Jpn. J. Appl. Phys. 49 064401 (2010).
 M. Hunault, H. Takesue, O. Tadanaga, Y. Nishida, and M. Asobe, "Generation of timebin entangled photon pairs by cascaded secondorder nonlinearity in a single periodically poled LiNbO3 waveguide," Opt. Lett. 35, 12391241 (2010).
 S. M. Huang, Y. Tokura, H. Akimoto, K. Kono, J. J. Lin, S. Tarucha and K. Ono, "Spin bottleneck in resonant tunneling through double quantum dots with different Zeeman splittings", Phys. Rev. Lett. 104, 136801 (2010).
 T. Kubo, Y. Tokura, and S. Tarcuha, "Quantum interference and Kondo effects in an AharonovBohmCasher interferometer containing a laterally coupled double quantum dot", Physics Procedia 3, 1225 (2010).
 H. Takesue, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, Y. Tokura, and S. Itabashi, "Entanglement generation using silicon wire waveguide," Optics and Spectroscopy 108, 160164 (2010).
 H. Takesue, K. Harada, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, Y. Tokura, and S. Itabashi, "Entanglement generation using silicon photonic wire waveguide," J. Nanosci. Nanotechnol. 10, 18141818 (2010) (invited paper).
 Toshiaki Obata, Michel PioroLadriere, Yasuhiro Tokura, Toshihiro Kubo, Katsuharu Yoshida, Tomoyasu Taniyama and Seigo Tarucha, "Coherent manipulation of individual electron spin in a double quantum dot integrated with a micromagnet", Phys. Rev. B81 085317 (2010).
 T. Obata, M. PioroLadriere, Y. Tokura, Y. S. Shin, T. Kubo, K. Yoshida, T. Taniyama, and S. Tarucha, "Selective Addressing of Single Electron Spins in a Semiconductor Double Quantum Dot Integrated with a MicroMagnet", AIP Conf. Proc., 1199, 381 (2010).
 O. EntinWohlman, A. Aharony, Y. Tokura and Y. Avishai, "Spinpolarized electric currents in quantum transport", Phys. Rev. B 81, 075439 (2010)(arXiv:0911.1347).
 Kenchi Harada, Hiroki Takesue, Hiroshi Fukuda, Tai Tsuchizawa, Toshifumi Watanabe, Koji Yamada, Yasuhiro Tokura, and Seiichi Itabashi, "Frequency and Polarization Characteristics of Correlated PhotonPair Generation Using a Silicon Wire Waveguide", IEEE J. Selected Topics in Quantum Electronics, 16, 325 (2010).
 Kiyoshi Tamaki, and Go Kato, "Quantum circuit for the proof of the security of quantum key distribution without encryption of error syndrome and noisy processing", Phys. Rev. A 81, 022316 (2010)
 A. Aharony, O. EntinWohlman, Y. Tokura, and S. Katsumoto, `Spin filtering due to quantum interference in periodic mesoscopic networks', Physica E 42, 629833 (2010), (special volume as the proceedings from the FQMT08 conference), arXiv:0812.2359.
 T. Kobayashi, S. Tsuruta, S. Sasaki, T. Fujisawa, Y. Tokura, and T. Akazaki, "Kondo effect in a semiconductor quantum dot with a spinaccumulated lead", Phys. Rev. Lett. 104, 036804 (2010).
 Y. S. Shin, T. Obata, M. PioroLadriere, Y. Tokura, R. Brunner, T. Kubo, K. Yoshida, and S. Tarucha, "Singlespin readout in a double quantum dot integrated with a micromagnet", Phys. Rev. Lett. 104, 046802 (2010).
 S. Amaha, T. Hatano, H. Tamura, T. Kubo, S. Teraoka, Y. Tokura, D. G. Austing, and S. Tarucha, "Charge States of a Collinearly and Laterally Coupled Vertical Triple Quantum Dot Device", Physica E 42, 899901 (2010).
 T. Kubo, Y. Tokura, T. Hatano, S. Amaha, S. Teraoka, and S. Tarucha, "Effects of observation on quantum interference in a laterally coupled double quantum dot using a quantum dot charge sensor", Physica E 42 852855 (2010).
 Y. S. Shin, T. Obata, M. PioroLadriere, Y. Tokura, R. Brunner, T. Kubo, K. Yoshida, and S. Tarucha, "Single Electron Addressing by using Photonassistedtunneling in a Double Quantum Dot including a MicroMagnet", Physica E 42, 825829 (2010).
 Y. Tokura, T. Kubo, Y. S. Shin, K. Ono, and S. Tarucha, "Quantum spin transport in magneticfieldengineered nanostructures", Physica E 42, 994998 (2010).
 H. Takesue and K. Shimizu, "Effects of multiple pairs on visibility measurements of entangled photons generated by spontaneous parametric processes," Opt. Commun. 283, 276287 (2010).

Domestic 
 Yasuhiro Tokura, "Electrical control of spin qubits in quantum dots", Kotaibutsuri (Solid State Physics) 45 (9), 29 (2010) (in Japanese).
 S. Takahashi, R. S. Deacon, K. Yoshida, A. Oiwa, S. Tarucha, K. Shibata, K. Hirakawa and Y. Tokura "Anisotropy of the spinorbit interaction in a single InAs selfassembled quantum dot", Kotaibutsuri (Solid State Physics) 45 (9), 41 (2010) (in Japanese).

Publications in 2009 
International 
 J. Okuma, N. Hayashi, A. Fujisawa, M. Mitsunaga, and K. Harada, "Parametric oscillation in sodium vapor by using an external cavity", Opt. Lett. 34 698700 (2009).
 K. Shimizu, and D. Hashimoto "Pairwise quantum correlation formed in an ensemble of atomic twolevel systems storing squeezed light" Physical Review A 79 (6), 062312 (2009).
 K. Shimizu, K. Tamaki, and H. Fukasaka "Twoway protocols for quantum cryptography with a nonmaximally entangled qubit pair" Physical Review A 80 (2), 022323 (2009).
 Kiyoshi Tamaki, Norbert Lutkenhaus, Masato Koashi, and Jamie Batuwantudawe, "Unconditional security of the Bennett 1992 quantumkeydistribution scheme with a strong reference pulse" Phys. Rev. A 80, 032302 (2009)
 Marco Lucamarini, Giovanni Di Giuseppe, and Kiyoshi Tamaki, "Robust unconditionally secure quantum key distribution with two nonorthogonal and uninformative states", Phys. Rev. A 80, 032327 (2009)
 Kai Wen, Kiyoshi Tamaki, and Yoshihisa Yamamoto, "Unconditional Security of SinglePhoton Differential Phase Shift Quantum Key Distribution", Phys. Rev. Lett. 103, 170503 (2009)
 K. Inaba and S. Suga "Finitetemperature properties of attractive threecomponent fermionic atoms in optical lattices" Phys. Rev. A 80, 041602(R) (2009)
 A. Yamamoto, M. Yamashita, and N. Kawakami, "Trapped ultracold fermions in doublewell optical lattices", J. Phys. Soc. Jpn. 78, 124001 (2009).
 A. Yamamoto, M. Yamashita, and N. Kawakami, "Nonadiabatic dynamics of ultracold fermions in optical superlattices", J. Phys. Soc. Jpn. 78, 123002 (2009).
 S. Amaha, T. Hatano, T. Kubo, S. Teraoka, A. Shibatomi, Y. Tokura, and S. Tarucha, "Laterally Coupled Triple SelfAssembled Quantum Dots", Proceedings of the 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology (ISQMTOKYO'08), World Scientific Pub Co Inc, Edited by S. Ishioka and K. Fujikawa.
 T. Hatano, T. Kubo, S. Amaha, S. Teraoka, Y. Tokura and S. Tarucha, "AharonovBohm oscillations in parallel coupled vertical double quantum dot", Proceedings of the 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology (ISQMTOKYO'08), World Scientific Pub Co Inc, Edited by S. Ishioka and K. Fujikawa.
 T. Kubo, Y. Tokura, S. Amaha, T. Hatano and S. Tarucha, "Electron transport through a laterally coupled triple quantum dot forming AharonovBohm Interferometer", Proceedings of the 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology (ISQMTOKYO'08), World Scientific Pub Co Inc, Edited by S. Ishioka and K. Fujikawa.
 H. Shibata, M. Asahi, T. Maruyama, T. Akazaki, H. Takesue, T. Honjo, and Y. Tokura, "Optical Response and Fabrication of MgB2 Nanowire Detectors", IEEE Trans. Appl. Superconductivity, 19, 358360 (2009).
 Yasuhiro Tokura, Toshiaki Obata, Tsuyoshi Hatano and Seigo Tarucha, "Electron spin manipulation in quantum dot systems", Electron Spin Resonance and Related Phenomena in LowDimensional Structures, chap. 2, in the Topic in Applied Physics, Springer Vol. 115 Ed. Marco Fanciulli, (2009 September) ISBN13:9783540793649.
 T. Obata, M. PioroLadriere, Y. Tokura, R. Brunner, Y. S. Shin, T. Kubo, K. Yoshida, T. Taniyama, and S. Tarucha, "Dynamical polarization effect of nuclear spin bath dragged by electron spin resonance in double qunatum dot integrated with micromagnet" J. Phys.: Conf. Ser., 193 (2009) 012046.
 Yasuhiro Tokura, Keiji Ono, and Seigo Tarucha, "Transient current in spin blockade condition", J. Phys.: Conf. Ser. 193 (2009) 012102.
 Y. Iwai, T. Honjo, K. Inoue, H. Kamada, Y. Nishida, O. Tadanaga and M. Asobe, "Polarization independent differential phase shift quantum key distribution system using upconversion detectors", Opt. Lett. 34, 16061608 (2009).
 J. F. Dynes, H. Takesue, Z. L. Yuan, A. W. Sharpe, K. Harada, T. Honjo, H. Kamada, O. Tadanaga, Y. Nishida, M. Asobe, and A. J. Shields, "Efficient entanglement distribution over 200 kilometers," Opt. Express 17, 1144011449 (2009).
 H. Takesue and Y. Noguchi, "Implementation of quantum state tomography for timebin entangled photon pairs," Opt. Express 17, 1097610989 (2009).
 H. Takesue and B. Miquel, "Entanglement swapping using telecomband photons generated in fibers," Opt. Express 17, 1074810756 (2009).
 T. Honjo, A. Uchida, K. Amano, K. Hirano, H. Someya, H. Okumura, K. Yoshimura, P. Davis, and Y. Tokura, "Differentialphaseshift quantum key distribution experiment using fast physical random bit generator with chaotic semiconductor lasers", Opt. Express 17, No. 11 90539061 (2009).
 B. Miquel and H. Takesue, "Observation of 1.5 ƒÊm band entanglement using single photon detectors based on sinusoidally gated InGaAs/InP avalanche photodiodes," New J. Phys. 11, 045006 (2009).
 H. Takesue, T. Honjo, K. Tamaki, and Y. Tokura, "Differential phase shift quantum key distribution," IEEE Communications Magazine 47, 102 (2009) (invited paper).
 T. Kodera, K. Ono, Y. Kitamura, Y. Tokura, Y. Arakawa, S. Tarucha, "Quantitative estimation of exchange interaction energy using twoelectron vertical double quantum dots", Phys. Rev. Lett. 102, 146802 (2009).
 K. Hitachi, A. Inoue, A. Oiwa, M. Yamamoto, M. PioroLadriere, Y. Tokura, and S. Tarucha, "Negative differential conductance in a quantum dot and possible application to ESR detection", J. Phys.: Conf. Ser. 150, 022026 (2009).
 Q. Zhang, H. Takesue, T. Honjo, K. Wen, T. Hirohata, M. Suyama, Y. Takiguchi, H. Kamada, Y. Tokura, O. Tadanaga, Y. Nishida, M. Asobe, and Y. Yamamoto, "Megabits secure key rate quantum key distribution", New J. Phys. 11, 045010 (2009).
 S. Amaha, T. Kubo, T. Hatano, S. Teraoka, A. Shibatomi, Y. Tokura and S. Tarucha, "Rectifying Behavior in Laterally Coupled Selfassembled Quantum Dots with Asymmetric Tunneling Barriers", APEX 2, 014501 (2009).
 Yasuhiro Tokura, Keiji Ono, and Seigo Tarucha, "Tunneling current through gfactor engineered series quantum dots", phys. stat. solidi (b) 246 (4), 740 (2009).
 S. Amaha, T. Hatano, T. Kubo, S. Teraoka, Y. Tokura, D. G. Austing, and S. Tarucha, "Stability diagrams of laterally coupled triple vertical quantum dots in triangular arrangement", Appl. Phys. Lett. 94, 092103 (2009).
 H. Sanada, T. Sogawa, H. Gotoh, Y. Tokura, H. Yamaguchi, H. Nakano and H. Kamada, "Magnetooptical spectroscopy of excitons and trions in chargetunable quantum dots", Phys. Rev. B 79, 121303(R) (2009).
 M. Yamashita and M. W. Jack, "Mottinsulator shells in the threedimensional BoseHubbard model with harmonic confinement", Phys. Rev. A 79, 023609 (2009).
 CH. Fred. Fung, K. Tamaki, B. Qi, HK. Lo, X. Ma, "Security proof of quantum key distribution with detection efficiency mismatch". Quantum Information and Computation, Vol. 9, No. 1&2 0131 (2009).
 Yasuhiro Tokura, "Electric spin orchestra", Nature Physics Vol. 5, No.1, 12 (2009).

Domestic 
 H. Takesue, "Progress of quantum cryptography technologies and future perspective," OYO BUTSURI 78, 972 (2009) (in Japanese).
 H. Takesue, "Quantum cryptography," MAGUNE (Magnetics Japan) 4, 294 (2009) (in Japanese).
 Yasuhiro Tokura, "Controlling single electron spin by electric field", Kotai butsuri Vol. 44, No.1, 17 (2009) in Japanese.
 F. Morikoshi, "Violation of Belltype inequalities and reality," Parity, Vol. 24, No. 2, p.13 (2009) (in Japanese).

Publications in 2008 
International 
 M. PioroLadriere, T. Obata, Y. Tokura, Y.S. Shin, T. Kubo, K. Yoshida, T. Taniyama and S. Tarucha, "Selective manipulation of electron spins with electric fields", Progress in Theoretical Physics Suppl. 176, 322 (2008).
 D. Hashimoto and K. Shimizu, "Cooling an optical fiber to 4.5 K by indirect thermal contact with a liquidhelium flow and spectroscopic temperature measurements", Rev. Sci. Instrum. 79 (9), 093102 (2008).
 H. Takesue, "Erasing distinguishability using quantum frequency upconversion," Phys. Rev. Lett. 101, 173901 (2008).
 T.Ishibashi, T. Kawata, A. Tsukada, H. Shibata, M. Naito, K. Sato, "Magnetooptical observation of magnetic flux in patterned MgB2 films", Physica C 468, 1313 (2008).
 T. Tsurumaru, and K. Tamaki, "Security proof for QKD systems with threshold detectors". Phys. Rev. A 78, 032302 (2008)
 M. Curty, K. Tamaki, T. Moroder, "Effect of detector deadtimes on the security evaluation of differentialphaseshift quantum key distribution against sequential attacks". Physical Review A 77, 052321 (2008).
 K. Inoue, T. Ohashi, T. Kukita, K. Watanebe, S. Hayashi, T. Honjo, and H. Takesue, "Differentialphaseshift quantum secret sharing", Opt. Express, 16, 20, 15469 (2008).
 T. Honjo, S. W. Nam, H. Takesue, Q. Zhang, H. Kamada, Y. Nishida, O. Tadanaga, M. Asobe, B. Baek, R. Hadfield, S. Miki, M. Fujiwara, M. Sasaki, Z. Wang, K. Inoue and Y. Yamamoto, "Long distance entanglementbased quantum key distribution over optical fiber", Opt. Express, 16, 23, 19118 (2008).
 K. Harada, H. Takesue, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, Y. Tokura, and S. Itabashi "Generation of highpurity entangled photon pairs using silicon wire waveguide", Opt. Express 16 20368 (2008).
 T. Kodera, K. Ono, S. Amaha, Y. Tokura, Y. Arakawa, and S. Tarucha "Elastic and inelastic tunneling through oneelectron and twoelectron states in a vertical double quantum dot", phys. stat. sol. (c) 5, No. 9, 2854 (2008).
 Amnon Aharony, Ora EntinWohlman, Yasuhiro Tokura and Shingo Katsumoto "Spin filtering by a periodic nanospintronic device", Phys. Rev. B 78, 125328 (2008) and selected as an Editor's Suggestion.
 V. Vedral and F. Morikoshi, "Schroedinger's cat meets Einstein's twins : a superposition of different clock times," Int. J. Theor. Phys. 47, 2126 (2008).
 T. Kubo, Y. Tokura, T. Hatano, and S. Tarucha "Electron transport through laterally coupled double quantum dots", Controllable Quantum States: Mesoscopic Superconductivity & Spintronics (Ms+s2006), World Scientific Pub Co Inc, Proceedings of the Intl. Symposium, NTT Basic Res. Lab., Japan 27 Feb  2 Mar 2006, Ed. H. Takayanagi, J. Nitta, and H. Nakano.
 S. Amaha, T. Hatano, S. Sasaki, T. Kubo, and Y. Tokura "Manipulation of Kondo effect by tuning orbital degeneracy", Controllable Quantum States: Mesoscopic Superconductivity & Spintronics (Ms+s2006), World Scientific Pub Co Inc, Proceedings of the Intl. Symposium, NTT Basic Res. Lab., Japan 27 Feb  2 Mar 2006, Ed. H. Takayanagi, J. Nitta, and H. Nakano.
 S. Amaha, T. Hatano, S. Sasaki, T. Kubo, Y. Tokura and S. Tarucha "Coulomb blockade properties of 4gated quantum dot", Controllable Quantum States: Mesoscopic Superconductivity & Spintronics (Ms+s2006), World Scientific Pub Co Inc, Proceedings of the Intl. Symposium, NTT Basic Res. Lab., Japan 27 Feb  2 Mar 2006, Ed. H. Takayanagi, J. Nitta, and H. Nakano.
 M. PioroLadriere, T. Obata, Y. Tokura, Y. S. Shin, T. Kubo, K. Yoshida, T. Taniyama, and S. Tarucha "Electrically Driven Single Electron Spin Resonance in a Slanting Zeeman Field", Nature Physics, 4 (10), 776 (2008).
 H. Shibata, T. Maruyama, T. Akazaki, H. Takesue, T. Honjo, and Y. Tokura, "Photon detection and fabrication of MgB2 nanowire," Physica C 468, 1992 (2008).
 T. Hatano, Y. Tokura, S. Amaha, T. Kubo, Y. Nishi, Y. Hirayama and S. Tarucha, "Manipulation of exchange coupling energy in a fewelectron double dot", Phys. Rev. B 77, 241301(R) (2008) also being selected as an Editor's selection.
 H. Kamada, M. Asobe, T. Honjo, H. Takesue, Y. Tokura, Y. Nishida, O.Tadanaga, and H. Miyazawa, "Efficient and lownoise singlephoton detection in 1550 nm communication band by frequency upconversion in periodically poled LiNbO3 waveguides," Opt. Lett. 33, 639 (2008).
 K. Tamaki, "Unconditionally secure quantum keydistribution with relatively strong signal pulse," Phys. Rev. A 77, 032341 (2008).
 H. Takesue, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, Y. Tokura, and S. Itabashi, "Generation of polarization entangled photon pairs using silicon wire waveguide," Opt. Express 16, 5721 (2008).
 Q. Zhang, H. Takesue, S. W. Nam, C. Langrock, X. Xie, B. Baek, M. M. Fejer, and Y. Yamamoto, "Distribution of timeenergy entanglement over 100 km fiber using superconducting singlephoton detectors," Opt. Express 16, 5776 (2008).
 S. Amaha, T. Hatano, T. Kubo, Y. Tokura, D. G. Austing and S. Tarucha, "Fabrication and characterization of a laterally coupled vertical triple quantum dot device", Physica E 40, 1322 (2008).
 T. Kubo, Y. Tokura, and S. Tarucha, "Coherent pseudospin dynamics in AharonovBohm interferometer containing a laterally coupled double quantum dot", Physica E 40, 1243 (2008).
 Tetsuo Kodera, Keiji Ono, Shinichi Amaha, Yasuhiro Tokura and Seigo Tarucha, "Singlettriplet transition induced by Zeeman energy in weakly coupled vertical double quantum dots", Physica E 40, 1139 (2008).
 Tsuyoshi Hatano, Yasuhiro Tokura, Shinichi Amaha, Toshihiro Kubo and Seigo Tarucha, "Observation of antibonding excited state in charging diagram of a fewelectron double dot", Physica E 40, 1238 (2008).
 Yasuhiro Tokura, Toshihiro Kubo, Shin'ichi Amaha, Tetsuo Kodera, and Seigo Tarucha, "Phonon induced coherence in multilevel quantum dot system", Physica E 40, 1690 (2008).
 N. Lambert, I. Mahboob, M. PioroLadriere, Y. Tokura,S. Tarucha, and H. Yamaguchi, "ElectronSpin Manipulation and Resonator Readout in a DoubleQuantumDot Nanoelectromechanical System", Phys. Rev. Lett., 100, 136802 (2008).
 Q. Zhang, C. Langrock, H. Takesue, X. Xie, M. M. Fejer, and Y. Yamamoto, "Generation of 10GHz clock sequential timebin entanglement," Opt. Express 16, 3293 (2008).
 Masami Kumagai, Akihito Taguchi, Toshihide Takagahara, Takahisa Ohno, and Kousuke. Yakubo, "Topological aspects of excitons in artificial structure" Solid State Commun. 145, 154(2008).
 Toshihiro Kubo, Yasuhiro Tokura, and Seigo Tarucha, "Exotic pseudospin Kondo effect in laterally coupled double quantum dots", Phys. Rev. B, 77 041305(R) (2008).
 S. Amaha, C. Payette, J. A. Gupta, T. Hatano, K. Ono, T. Kodera, Y. Tokura, S. Tarucha and D. G. Austing, "Tow level mixing effects probed by resonant tunneling through vertically couled quantum dots", physica status solidi (c) 5, 174 (2008).
 T. Kubo, Y. Tokura and S. Tarucha, "Coherent pseudospin resonance in a laterally coupled double quantum dot", physica status solidi (c) 5, 170 (2008).
 T. Kobayashi, S. Sasaki, T. Fujisawa, Y. Tokura, and T. Akazaki, "Energy distribution of the ballistic hot electrons and holes emitted from a quantum point contact and probed by a quantum dot", physica status solidi (c) 5, 162 (2008).

Publications in 2007 
International 
 A. Yamamoto, T. Yamashita, M. Yamashita, and N. Kawakami, "Groundstate properties in 1D Hubbard model in optical superlattice", J. Magn. Magn. Mater. 310 (2), 910 (2007).
 C. H. F. Fung, B. Qi, K. Tamaki and H. K. Lo, "Phaseremapping attack in practical quantumkeydistribution systems", Phys. Rev. A 75 (3), 032314 (2007).
 T. Obata, M. PioroLadriere, Y. Tokura, and S. Tarucha, "Microwave band onchip coil technique for single electron spin resonance in a quantum dot", Review of Scientific Instruments 78, 104704 (2007).
 T. Obata, M. PioroLadriere, T. Kubo, K. Yoshida, Y. Tokura, and S. Tarucha, "Onchip microcoil technique for single electron spin resonance with quantum dot", Physica E: Lowdimensional Systems and Nanostructures 40, 351 (2007).
 M. PioroLadriere, Y. Tokura, T. Obata, T. Kubo, K. Yoshida, and S. Tarucha, "Spincharge qubit resonance readout in lateral quantum dots", Physica E: Lowdimensional Systems and Nanostructures 40, 347 (2007).
 T. Honjo, S. Yamamoto, T. Yamamoto, H. Kamada, Y. Nishida, O. Tadanaga, M. Asobe and K. Inoue, "Field trial of differentialphaseshift quantum key distribution using polarization independent frequency upconversion detectors", Opt. Express, 15, 15920 (2007).
 H. Takesue, Y. Tokura, H. Fukuda, T. Tsuchizawa, T. Watanabe, K. Yamada, and S. Itabashi, "Entanglement generation using silicon wire waveguide,"Appl. Phys. Lett. 91, 201108 (2007).
 T. Honjo, H. Takesue, H. Kamada, Y. Nishida, O. Tadanaga, M. Asobe and K. Inoue, "Longdistance distribution of timebin entangled photon pairs over 100 km using frequency upconversion detectors," Opt. Express, 15, 13957 (2007).
 S. Russo, J. Tobiska, T. M. Klapwijk, and A. F. Morpurgo,"Adiabatic quantum Pumping at the Josephson Frequency",Phys. Rev. Lett. 99, 086601 (2007).
 M. Yamashita and M. W. Jack, "Spin structures of spin1 bosonic atoms trapped in an opticallattice with harmonic confinement", Phys. Rev. A 76, 023606 (2007).
 Q. Zhang, X. Xie, H. Takesue, S. W. Nam, C. Langrock, M. M. Fejer, and Y. Yamamoto, "Correlated photonpair generation in reverseprotonexchange PPLN waveguides with integrated mode demultiplexer at 10 GHz clock," Opt. Express 15, 10288 (2007).
 H. Takesue, S. W. Nam, Q. Zhang, R. H. Hadfield, T. Honjo, K. Tamaki and Y. Yamamoto, "Quantum key distribution over 40 dB channel loss using superconducting singlephoton detectors," Nature Photonics 1, 343 (2007).
 H. Takesue, "1.5um band HongOuMandel experiment using photon pairs generated in two independent dispersion shifted fibers," Appl. Phys. Lett. 90, 204101 (2007).
 H. Shibata, S. Karimoto, A. Tsukada, and T. Makimoto, "Thin film growth of (Cu, C)Ba2Ca(n1)CunOy (n=14) superconductor by molecular beam epitaxy", Journal Of Crystal Growth 301684686 (2007).
 T. Honjo, H. Takesue, and K. Inoue, "Differentialphase quantum key distribution experiment using a series of quantum entangled photon pairs", Optics Letters 32 (9)11651167 (2007).
 Yoshifumi Nishi, Yasuhiro Tokura, James Gupta, Guy Austing, and Seigo Tarucha, "Groundstate transitions beyond the singlettriplet transitions
for a twoelectron quantum dot",
Phys. Rev. B 75, 121301(R) (2007).
 T. Honjo, H. Takesue and K. Inoue, "Generation of energytime entangled photon pairs in 1.5um band with periodically poled lithium niobate waveguide," Opt. Express 15, 1679 (2007).
 M. PioroLadriere, Y. Tokura, T. Obata, T. Kubo, and S. Tarucha,
"Micromagnets for coherent electron spin control in quantum
dots", Appl. Phys. Lett. 90, 024105 (2007).
 T. Kimura, S. Tsuchiya, M. Yamashita, and S. Kurihara,
"Gutzwiller study of spin1 Bosons in an optical lattice under
a magnetic field", Laser Physics 17, 54 (2007).
 T. Kubo, Y. Tokura, and S. Tarucha, "Pseudospin Kondo effect in AharonovBohm interferometer containing laterally coupled double quantum dots", AIP Conference Proceedings (ICPS 2006) 893, 765 (2007).
 T. Hatano, Y. Tokura, S. Amaha, T. Kubo, and S. Tarucha, "Observation of the singlet and triplet states in a hybrid verticallateral double dot", AIP Conference Proceedings (ICPS 2006) 893, 853 (2007).
 F. Morikoshi, "Temporal analogue of informationtheoretic Bell inequalities," AIP Conference Proceedings 889, 369 (2007).
 Yasuhiro Tokura, Hiromasa Nakano, and Toshihiro Kubo, "Interference through quantum dots", New J. Phys. 9 (2007) 113.
 N. Namekata, G. Fujii, S. Inoue, T. Honjo and H. Takesue, "Differential phase shift quantum key distribution using singlephoton detectors based on a sinusoidally gated InGaAs/InP avalanche photodiode," Appl. Phys. Lett. 91, 011112 (2007).

Publications in 2006 
International 
 E. Waks, E. Diamanti and Y. Yamamoto, "Generation of photon number states", New J. Phys. 8, 4 (2006).
 K. Inoue, "Quantum key distribution technologies", IEEE J. Sel. Top. Quantum Electron. 12 (4), 888 (2006).
 T. Yamashita, N. Kawakami, and M. Yamashita, "Fermionic atoms trapped in a onedimensional optical superlattice with harmonic confinement", Phys. Rev. A 74, 063624 (2006).
 E. Diamanti, H. Takesue, C. Langrock, M. M. Fejer and Y. Yamamoto,
"100 km differential phase shift quantum key distribution experiment
with low jitter upconversion detectors," Opt. Express 14, 13073 (2006).
 H. Takesue, E. Diamanti, C. Langrock, M. M. Fejer and Y. Yamamoto,
"1.5um single photon counting using polarizationindependent upconversion
detector," Opt. Express 14, 13067 (2006).
 Toshihiro Kubo, Yasuhiro Tokura, Tsuyoshi Hatano and Seigo Tarucha,
"Electron transport through AharonovBohm interferometer with
laterally coupled double quantum dots",
Phys. Rev. B. 74, 205310 (2006).
 A. Tsukada, H. Shibata, M. Noda, H. Yamamoto, and M. Naito,
"Charge transfer gap for T 'RE2CuO4 and TLa2CuO4 as estimated from Madelung potential calculations",
Physica Csuperconductivity And Its Applications 4459496 (2006).
 H. Shibata, S. Karimoto, A. Tsukada, and T. Makimoto,
"Growth of (Cu,C)Ba2Ca((n1))CunOy thin films by molecularbeam epitaxy",
Physica Csuperconductivity And Its Applications 445862864 (2006).
 H. Takesue, E. Diamanti, C. Langrock, M. M. Fejer, and Y. Yamamoto,
"10GHz clock differential phase shift quantum key distribution experiment",
Optics Express 14 (20)95229530 (2006).
 H. Takesue and K. Inoue,
"Quantum secret sharing based on modulated highdimensional timebin entanglement",
Physical Review A 74 (1), 012315 (2006).
 H. Takesue, T. Honjo, and H. Kamada,
"Differential phase shift quantum key distribution using 1.3mu m upconversion detectors",
Japanese Journal Of Applied Physics Part 1regular Papers Brief 45 (7)57575760 (2006).
 X. F. Ma, C. H. Fung, F. Dupuis, K. Chen, K. Tamaki, and H. K. Lo,
"Decoystate quantum key distribution with twoway classical postprocessing",
Physical Review A 74 (3), 032330 (2006).
 T. Kimura, S. Tsuchiya, M. Yamashita, and S. Kurihara, "SuperfluidMott
Insulator Transition of Spin1 Bosons in Optical Lattice under Magnetic
Field", J. Phys. Soc. Jpn. 75, 074601 (2006).
 M. Yamamoto, M. Stopa, Y. Tokura, Y. Hirayama, and S. Tarucha,
"Negative Coulomb drag in a onedimensional wire",
Science, 313 (2006) 204.
 T. Honjo, K. Inoue, A. Sahara, E. Yamazaki and H. Takahashi,
"Quantum Key Distribution Experiment through a PLC Matrix Switch",
Optics Communications 263, 120 (2006).
 K. Shimizu and A. Kawaguchi,
"Approach to the quantum phase transition of spin chains in terms of pairwise entanglement",
Physics Letters A 355, p176179 (2006).
 H. Takesue, N. Yoshimoto, Y. Shibata, T. Ito, Y. Tohmori and T. Sugie,
"Wavelength channel data rewriter using semiconductor optical saturator / modulator,"
J. Lightwave Technol. 24, 2347 (2006).
 F. Morikoshi,
"Informationtheoretic temporal Bell inequality and quantum computation",
Physical Review A 73 (5), 052308 (2006).
 H. Takesue,
"Longdistance distribution of timebin entanglement generated in a cooled fiber",
Optics Express 14 (8)34533460 (2006).
 K. Inoue, and H. Takesue,
"Quantum key distribution using entangledphoton trains with no basis selection",
Physical Review A 73 (3), 032332 (2006).
 E. Diamanti, C. Langrock, M. M. Fejer, Y. Yamamoto, and H. Takesue,
"1.5 mu m photoncounting optical timedomain reflectometry with a singlephoton detector based on upconversion in a periodically poled lithium niobate waveguide",
Optics Letters 31 (6)727729 (2006).
 T. Honjo, and K. Inoue,
"Differentialphaseshift quantum key distribution with an extended degree of freedom",
Optics Letters 31 (4)522524 (2006).
 E. Waks, H. Takesue, and Y. Yamamoto,
"Security of differentialphaseshift quantum key distribution against individual attacks",
Physical Review A 73 (1), 012344 (2006).
 Y. Tokura, W. G. vanderWiel, T. Obata, and S. Tarucha,
"Coherent single electron spin control in a slanting Zeeman field",
Physical Review Letters 96 (4), 047202 (2006).

Domestic 
 F. Morikoshi,
"Quantum Information Processing and Entanglement,"
Optical and ElectroOptical Engineering Contact,"
Vol. 44, No. 11, p.3 (2006) (in Japanese).
 H. Takesue,
"Generation of entangled photon pairs in telecommunication
wavelength band," OYO BUTSURI, 75, 1354 (2006) (in Japanese).
 H. Takesue, "Generation of telecomband quantum entangled photon pairs and
its application to quantum key distribution, " Review of the National
Institute of Information and Communications Technology 52, No. 3, p. 63
(2006) (in Japanese) / Journal of the National Institute of Information and
Communications Technology 53, No.3, p. 69 (2006) (English translation).
 M. Yamamoto, M. Stopa, Y. Hirayama, Y. Tokura, and S. Tarucha,
"Coulomb Drag in Coupled Quantum Wires",
Solid State Physics, 41, 679 (2006) (in Japanese).
 Y. Tokura and M. Morita,
"Fast and longdistance QKD using Differential phase shift
protocol and upconversion single photon detector",
Quantum information and communication, Ed. M. Sasaki and
M. Matsuoka, Oputoronikususha, pp.164 (in Japanese).

Publications in 2005 
International 
 E. Diamanti, H. Takesue, T. Honjo, K. Inoue, and Y. Yamamoto,
"Performance of various quantumkeydistribution systems using 1.55mu m upconversion singlephoton detectors",
Phys. Rev. A 72 (5), 052311 (2005).
 T. Honjo and K. Inoue,
"Plug & play quantum key distribution using modulation sidebands for shifting frequency",
Jpn. J. Appl. Phys. Part 1  Regul. Pap. Brief Commun. Rev. Pap. 44 (9A), 65506552 (2005).
 K. Inoue and T. Honjo,
"Robustness of differentialphaseshift quantum key distribution against photonnumbersplitting attack",
Phys. Rev. A 71 (4), 042305 (2005).
 K. Inoue,
"Quantum key distribution using a series of quantum correlated photon pairs",
Phys. Rev. A 71 (3), 032301 (2005).
 M. W. Jack and M. Yamashita,
"Maximal entanglement of two spinor BoseEinstein condensates",
Phys. Rev. A 71 (3), 033619 (2005).
 M. W. Jack and M. Yamashita,
"BoseHubbard model with attractive interactions",
Phys. Rev. A 71 (2), 023610 (2005).
 Y. Katagiri, H. Takesue, and E. Hashimoto,
"Wavelengthscanning optical bandpass filters based on optomechatronics for opticalfrequency sweepers",
IEEE Trans. Ind. Electron. 52 (4), 9921004 (2005).
 T. Kubo and Y. Tokura,
"Electron transport in magneticfieldinduced quasionedimensional electron systems in semiconductor nanowhiskers",
Physica E 29 (34), 525529 (2005).
 T. Kubo and Y. Tokura,
"Manybody effects on tunneling of electrons in magneticfieldinduced quasionedimensional electron systems in semiconductor nanowhiskers",
J. Phys. Soc. Jpn. 74 (2), 519522 (2005).
 C. Langrock, E. Diamanti, R. V. Roussev, Y. Yamamoto, M. M. Fejer, and H. Takesue,
"Highly efficient singlephoton detection at communication wavelengths by use of upconversion in reverseprotonexchanged periodically poled LiNbO3 waveguides",
Opt. Lett. 30 (13), 17251727 (2005).
 K. Maruyama, F. Morikoshi, and V. Vedral,
"Thermodynamical detection of entanglement by Maxwell's demons",
Phys. Rev. A 71 (1), 012108 (2005).
 H. Takesue, E. Diamanti, T. Honjo, C. Langrock, M. M. Fejer, K. Inoue, and Y. Yamamoto,
"Differential phase shift quantum key distribution experiment over 105km fibre",
New J. Phys. 7, 232 (2005).
 H. Takesue and K. Inoue,
"Generation of 1.5mu m band timebin entanglement using spontaneous fiber fourwave mixing and planar lightwave circuit interferometers",
Phys. Rev. A 72 (4), 041804 (2005).
 H. Takesue and K. Inoue,
"1.5mu m band quantumcorrelated photon pair generation in dispersionshifted fiber: suppression of noise photons by cooling fiber"
Opt. Express 13 (20), 78327839 (2005).
 H. Takesue, K. Inoue, O. Tadanaga, Y. Nishida, and M. I. Asobe,
"Generation of pulsed polarizationentangled photon pairs in a 1.55mu m band with a periodically poled lithium niobate waveguide and an orthog onal polarization delay circuit",
Opt. Lett. 30 (3), 293295 (2005).

Domestic 
 F. Morikoshi, "Entanglement and thermodynamical structure,"
Mathematical Sciences, February p.42 (2005) (in Japanese).

Publications in 2004 
International 
 T. Mukai and M. Yamashita,
"Efficient rapid production of BoseEinstein condensate
by overcoming serious threebody loss",
Phys. Rev. A 70, 013615 (2004).
 T. Hong, M. W. Jack and M. Yamashita,
"Ondemand singlephoton state generation via nonlinear
absorption",
Phys. Rev. A 70, 013814 (2004).
 D. Fattal, K. Inoue, C. Santori, J. Vuckovic, G. Solomon, Y. Yamamoto,
"Entanglement formation and violation of Bell's inequality with a
semiconductor single photon source," Phys. Rev. Lett., vol. 92, 037903, 2004.
 D. Fattal, E. Diamanti, K. Inoue, Y. Yamamoto, "Quantum teleportation
with a quantum dot single photon source," Phys. Rev. Lett. , vol. 92,
037904, 2004.
 K. Inoue, K. Shimizu, "Generation of quantum correlated photon pairs in
optical fiber: Influence of spontaneous Raman scattering," Jpn. J. Appl.
Phys., vol. 43, pp. 80488052, 2004.
 H. Takesue and K. Inoue, "Generation of polarization entangled
photon pairs and violation of Bell's inequality using spontaneous
fourwave mixing in a fiber loop," Phys. Rev. A, 70, 031802(R)
(2004).
 H. Takesue and T. Horiguchi, "Broadband lightwave synthesized
frequency sweeper using synchronous filtering," IEEE J. Lightwave
Technol., Vol. 22, No. 3, pp. 755762, 2004.
 J. Shimamura, S. K. Ozdemir, F. Morikoshi, and N. Imoto, "Quantum and
classical correlations between players in game theory," Int. J. Quant. Info.2,
79 (2004).
 F. Morikoshi, M. F. Santos, and V. Vedral, "Accessibility of physical states
and nonuniqueness of entanglement measure," J. Phys. A: Math. Gen. 37, 5887
(2004).
 J. Shimamura, S. K. Ozdemir, F. Morikoshi, and N. Imoto, "Entangled states that
cannot reproduce original classical games in their quantum version," Phys.
Lett. A. 328, 20 (2004).
 S. K. Ozdemir, J. Shimamura, F. Morikoshi, and N. Imoto, "Dynamics of a
discoordination game with classical and quantum correlations," Phys. Lett. A
333, 218 (2004).
 F. Morikoshi, "Accessibility between entangled states," NTT Tech. Rev. 2,19
(2004).
 K. Maruyama, F. Morikoshi, and V. Vedral, "Thermodynamical Detection of
Entanglement by Maxwell's Demons," To be published in Phys. Rev. A.
 T. Honjo, K. Inoue and H. Takahashi,
"Differentialphaseshift quantum key distribution experiment with
a planar lightwave circuit MachZehnder interferometer",
Opt. Lett.,29, 2797, (2004)
 T. Kubo and Y. Tokura.
"Manybody effects on tunneling of electrons in
magneticfieldinduced quasi onedimensional electron
systems in semiconductor nanowhiskers",
Accepted for publication in J. Phys. Soc. Jpn.
 H. Yamaguchi, Y. Tokura, S. Miyashita, and Y. Hirayama,
"Quantum interference effects in the magnetopiezoresistance of
InAs/AlGaSb quasionedimensional electron systems ",
Phys. Rev. Lett. 93 (2004) 36603.
 Y. Tokura,
"Current Noise in a Quantum Point Contact",
Physica E 22 (2004) 284.

Domestic 
 K. Inoue,
"Optical Parametric Amplifier",
Encyclopedic Handbook of Integrated Optics (2004).

Publications in 2003 
International 
 E. Waks, K. Inoue, W. Oliver, E. Diamanti, and Y. Yamamoto,
"High efficiency photon number detection for quantum information
processing", IEEE J. Selected Area on Quantum Electron. 9,
1502(2003).[invited]
 F. Morikoshi, and M. Koashi, "Entanglement Concentration via
Deterministic Transformation", Proceedings of the 6th
International Conference on Quantum Communication, Measurement and
Computing (2003).
 T. Hong, "Spatial weaklight solitons in an
electromagnetically induced nonlinear waveguide",
Phys. Rev. Lett. 90, 183901(2003).
 K. Shimizu, and N. Imoto, "Communication channels analogous to
oneoutoftwo oblivious transfers based on quantum uncertainty
II.Closing an EPRtype of loopholes", Phys. Rev. A67, 34301(2003).
 M. W. Jack, and M. Yamashita, "Signatures of the quantum
fluctuations of cold atoms in an optical lattice in the threebody
decay rate", Phys. Rev. A67, 33605(2003).
 T. Itakura, and Y. Tokura, "Effect of multiple charge traps on
dephasing rates of a Josephson charge qubit system",
J. Phys. Soc. Jpn. 72, 2726(2003).
 T. Yamamoto, M. Koashi, S. K. Ozdemir, and N. Imoto
"Experimental extraction of an entangled photon pair from
decohered pairs.", Nature 421, 343(2003).
 Y. Yamamoto, and K. Inoue, "Noise in Amplifiers", J. Lightwave
Technol. 21, 2895(2003). [invited]
 T. Itakura and Y. Tokura, "Dephasing due to background charge
fluctuations ", Phys. Rev. B 67, 195320 (2003).
 G. S. Solomon, M. Pelton, C. Santori, D. Fattal, J. Vuckovic,
E. Waks, K. Inoue, and Y. Yamamoto, "Highefficiency triggered
photons using singlecavity mode coupling of single quantum dot
emission", Proc. SPIE Int. Soc. Opt. Eng. 5248, 1 (2003).
 K. Inoue, E. Waks, and Y. Yamamoto, "Differentialphaseshift
quantum key distribution using coherent light", Phys. Rev. A 68,
022317 (2003).
 K. Inoue, C. Santori, E. Waks, and Y. Yamamoto,
"Entanglementbased quantum key distribution without an
entangledphoton source", Phys. Rev. A 67, 062319 (2003).
 M. Yamashita and T. Mukai, "Stabilization of the number of
BoseEinsteincondensed atoms in evaporative cooling via
threebody recombination loss", Phys. Rev. A 68, 063601 (2003).
 M. Yamashita, M. Koashi, T. Mukai, M. Mitsunaga, N. Imoto, and
T. Mukai, "Optimization of evaporative cooling towards a large
number of BoseEinsteincondensed atoms", Phys. Rev. A 67, 023601
(2003).
 M. W. Jack, "Effect of atom loss on collapse and revivals of
phase coherence in small atomic samples", Phys. Rev. A 67, 043612
(2003)
 M. Hayashi, M. Koashi, K. Matsumoto, F. Morikoshi, and
A. Winter, "Error exponents for entanglement concentration",
J. Phys. A: Math. Gen. 36, 527 (2003).
 J. Anderberg, M. S. Colclough, D. B. Crum, Y. Tokura,
D. N. Paulson, and R. L. Fagaly, "LTS SQUID Microscope with
Micron Spatial Resolution", IEEE Trans. On Applied
Superconductivity, 13 231 (2003).
 B. Y. Zhang, G. Solomon, G. Weihs, and Y. Yamamoto,
"Experimental extract and empirical fourmulas of
refractive indices of GaAs and AlAs at high temperature
by HRXRD and optical reflectivity measurement",
J. Cryst. Growth, 251 (2003) 777.
 T. Itakura and Y. Tokura,
"Dephasing of a coupled qubit system during gate
operations due to background charge fluctuations",
Superlattices and Microstructures 34 (2003) 497.
 Y. Tokura,
"Spin fluctuation and transport anomaly in a quantum point contact",
(proceedings of 'The 26th Int. Conf. Physics of
Semiconductors' Edinburgh 2002).
 T. Fujisawa, D. G. Austing, Y. Tokura, Y. Hirayama, and S. Tarucha,
"Spin selection rules in singleelectron transport
through a fewelectron quantum dot",
Proceedings of 'The 26th ICPS, Ed. A. R. Long and J. H. Davies,
Inst. of Phys. Conf. Ser. No. 171, p. 245 (2003).
 M. Yamamoto, M. Stopa, Y. Hirayama, Y. Tokura, and S. Tarucha,
"Negative drag in quantum wires",
Proceeding of 26th Int. conf. on the Physics of semiconductors
(World Scientific, Edinburgh. 2003).
 T. Fujisawa, D. G. Austing, Y. Tokura, Y. Hirayama, and S. Tarucha,
"Electrical pulse measurement, inelastic relaxation,
and nonequilibrium transport in a quantum dot",
J. Phys.:Condens. Matter 15 (2003) R1395.
 T. Saitoh, M. Kumagai, H. Wang, T. Tawara, T. Nishida, T. Akasaka,
and N. Kobayashi, Appl. Phys. Lett., 82, 4426(2003).
 N. Hatakenaka, M. Nishida, M. Kumagai and H. Takayanagi,
Physica E 18, 239(2003).
 H. Takesue and T. Sugie, "Wavelength channel data rewrite using
saturated SOA modulator for WDM networks with centralized light
sources," IEEE J. Lightwave Technol., Vol. 21, No. 11,
pp. 25462556, 2003.

Domestic 
 Yasuhiro Tokura,
`Report on Int. Conf. on Electron Properties of
Twodimensional Systems',,
Kotaibutsuri 38 (2003) 707 (in Japanese).
 K. Shimizu,
"Theory of quantum mechanics and bit commitment",
SuuriKagaku, 2004.
 K. Shimizu,
"Introduction to quantum telepotation",
O plus E, 2004.
 K. Inoue,
"Quantum Cryptography",
OHM, 2004.
 K. Inoue,
"Quantum entanglement generation and quantum telepotation using a
singlephoton source",
NikkeiSentanGijyutu, 2004.

Publications in 2002 
International 
 K. Inoue and T. Mukai, "Experimental Study on Noise
Characteristics of a GainSaturated Fiber Optical Parametric
Amplifier," J. Lightwave Technol., 20, 969 (2002).
 M. Pelton, C. Santori, J. Vuckovic, B. Zhang, G. Solomon,
J. Plant, and Y. Yamamoto,
"Efficient source of single photons: A single quantum dot in a
micropost microcavity," Phys. Rev. Lett., 89, 233602 (2002).
 E. Waks, K. Inoue, C. Santori, D. Fattal, J. Vuckovic, G. Solomon,
and Y. Yamamoto, "Quantum Cryptography with a Photon Turnstile",
Nature 420, 762(2002).
 K. Inoue, E. Waks, and Y. Yamamoto,
"Differential Phase Shift Quantum Key Distribution",
Phys. Rev. Lett. 89, 037902 (2002).
 K. Shimizu and N. Imoto,
"Communication channels analogous to one out of two oblivious
transfers based on quantum uncertainty", Phys. Rev. A66, 052316(2002).
 T. Hong, M. W. Jack, M. Yamashita, and T. Mukai,
"Enhanced Kerr nonlinearity for selfaction via atomic coherence
in a fourlevel atomic system", Optics Commun. 214, 371(2002).
 M. W. Jack,
"Decoherence due to threebody loss and its effect on the state
of BoseEinstein condensate", Phys. Rev. Lett. 89, 140402(2002).
 M. Yamamoto, M. Stopa, Y. Tokura, Y. Hirayama, and S. Tarucha,
"Coulomb drag between quantum wires: magnetic field effects and
negative anomaly",
PhysicaE, 12/14 726 (2002).
 T. Asayama, Y. Tokura. S. Miyashita, M. Stopa and S. Tarucha,
"1D Bragg reflector in the TomonagaLuttinger
liquid regime and Fermi liquid regimes",
PhysicaE 12/14 186 (2002).
 Y. Tokura and A. Khaetskii,
"Towards a microscopic theory of the 0.7 anomaly",
Physica E, 12/14 (2002) 711.
 K. Ono, D. G. Austing, Y. Tokura, and S. Tarucha,
"Current Rectification by Pauli Exclusion in a Weakly Coupled
Double Quantum Dot System", Science 297, 1313(2002).
 K. Ono, D. G. Austing, Y. Tokura and S. Tarucha,
"Angular momentum selectivity in tunneling between two quantum
dots", Physica B: Condensed Matter, 314 450 (2002).
 T. Fujisawa, D. G. Austing, Y. Tokura, Y. Hirayama,
and S. Tarucha,
"Allowed and forbidden transitions in artificial
hydrogen and helium atoms", Nature, 419 (2002) 278.
 T. Fujisawa, D. G. Austing, Y. Tokura, Y. Hirayama, and
S. Tarucha,
"Nonequilibrium Transport through a Vertical Quantum Dot
in the Absence of SpinFlip Energy Relaxation",
Phys. Rev. Lett. 88 (2002) 236802.
 T. Fujisawa, Y. Tokura, D. G. Austing, Y. Hirayama, and
S. Tarucha,
`Spindependent energy relaxation inside a quantum dot',
Physica B: Condensed Matter, 314 (2002) 224.
 D. G. Austing, S. Sasaki, K. Muraki, Y. Tokura, K. Ono,
S. Tarucha, M. Barranco, A. Emperador, M. Pi, and F. Garcias,
`Vertical diatomic artificial quantum dot molecules',
Advanced luminescent materials and quantum confinement II,
ed. M. Cahay, J. P. Leburton, D. J. Lockwood, S. Bandyopadhyay,
N. Koshida and M. Zacharias, (The Electrochemical Society, Pennington, 2002).
 F. Morikoshi and M. Koashi,
"Exactly distillable entanglement" ,Proceedings
of the 7th International Symposium on Foundations of
Quantum Mechanics in the Light of New Technology
(ISQMTokyo '01), p57 (2002).
 H. Takesue, T. Horiguchi and T. Kobayashi, "Numerical simulation
of a lightwave synthesized frequency sweeper incorporating an
optical SSB modulator composed of four optical phase modulators,"
IEEE J. Lightwave Technol., Vol. 20, No. 11, pp. 19081917, 2002.
 T. Sato, F. Yamamoto, K. Tsuji, H. Takesue, and T. Horiguchi, "An
uncooled external cavity diode laser for coarseWDM access network
systems," IEEE Photon. Technol. Lett., Vol. 14, No. 7,
pp. 10011003, 2002.
 H. Takesue and T. Horiguchi, "Chromatic dispersion measurement of
optical components using lightwave synthesized frequency sweeper,"
IEEE J. Lightwave Technol., Vol. 20, No. 4, pp. 625633, 2002.
 H. Wang, T. Tawara, M. Kumagai, T. Saitoh, and N. Kobayashi,
Jpn. J. Appl. Phys., Part 2, 41, L681(2002).
 H. Wang, M. Kumagai, T. Tawara, T. Nishida, T. Akasaka, N. Kobayashi,
and T. Saitoh, Appl. Phys. Lett., 81, 4703(2002).

Domestic 
 T. Mukai, "BEC was achieved in NTT BRL", NIKKEI SENTAN GIJYUTSU
26, 3(2002). (in Japanese)
 Y. Tokura, "Conductance anomaly in a quantum point contact",
Kotaibutsuri 37, 363(2002). (in Japanese)
 K. Kanisawa, M. J. Butcher, Y. Tokura, H. Yamaguchi, and Y. Hirayama,
`Direct observation of local density of states of
quantized conduction electrons',
Kotai Butsuri, 37. (2002) 81 (in Japanese).
 Y. Tokura,
`Physics of onedimensional TomonagaLuttinger liquid',
Suurikagaku, 464 (2002) 24 (in Japanese).
 Y. Tokura,
"Success in Quantum key distribution experiments using single
phton source",
NikkeiSentanGijyutu, 2002.
 Y. Tokura,
"A quantum cryptography experiment using a singlephoton source
was successfully demonstrated",
DenshiJyohoTsushinGakkai, 2002.

Publications in 2001 
International 
 K. Inoue, "Suppression of level fluctuation without extinction
ratio degradation based on output saturation in higher order
optical parametric interaction in fiber",
IEEE Phton. Technol. Lett., 13 (2001) 338.
 K. Inoue and T. Mukai,
"Spectral hole in the amplified spontaneous emission
spectrum of a fiber optical parametric amplifier",
Opt. Lett., 26 (2001) 869.
 F. Morikoshi and M. Koashi,
"Deterministic entanglement concentration",
Phys. Rev. A64 (2001) 022316.
 K. Inoue and T. Mukai,
"Signalmasked optical communication utilizing amplified
spontaneous emission of an optical amplifier",
Opt. Commun. 197 (2001) 53.
 K. Shimizu and N. Imoto,
"Faulttolerant simple quantumbit commitment unbreakable
by individual attacks",
Phys. Rev. A64 (2002) 032324.
